133596
08.02.2021 •
Mathematics
The coordinates of quadrilateral ABCD plotted on a coordinate plane are A(0, 3), B(3,-1). C(-4, -3) and D(-7, 1). what is the perimeter of the quadrilateral?
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Ответ:
24.56 (parallelogram)
Step-by-step explanation:
4 sides of ABCD: AB, BC, AD, DC
perimeter = AB + BC + AD + DC
distance of two points: √(x-x')²+(y-y')²
AB = √3²+4² = √25 = 5
BC = √7²+2² = √53 = 7.28
AD = √7²+2² = √53 = 7.28
DC = √3²+4² = √25 = 5
P = 5*2 + 7.28*2 = 24.56
Ответ:
x=9 y=1
Step-by-step explanation: